include/alloca-conf.h

   1 #include "config.h"
   2
   3 /* This is a merge of code recommended in the autoconf-2.61 documentation
   4    with that recommended in the autoconf-2.13 documentation, with added
   5    tweaks to heed C_ALLOCA.  */
   6
   7 #if defined HAVE_ALLOCA_H && !defined C_ALLOCA
   8 # include <alloca.h>
   9 #else
  10 # if defined __GNUC__ && !defined C_ALLOCA
  11 #  if !defined alloca
  12 #   define alloca __builtin_alloca
  13 #  endif
  14 # else
  15 #  if defined _AIX
  16 /* Indented so that pre-ansi C compilers will ignore it, rather than
  17    choke on it.  Some versions of AIX require this to be the first
  18    thing seen by the compiler except for comments and preprocessor
  19    directives.  */
  20     #pragma alloca
  21 #  else
  22 #   if defined _MSC_VER && !defined C_ALLOCA
  23 #    include <malloc.h>
  24 #    define alloca _alloca
  25 #   else
  26 #    if !defined alloca
  27 #     if defined __STDC__ || defined __hpux
  28 #      if defined HAVE_STDDEF_H
  29 #       include <stddef.h>
  30 #       if defined  __cplusplus
  31 extern "C" void *alloca (size_t);
  32 #       else
  33 extern void *alloca (size_t);
  34 #       endif
  35 #      else
  36 extern void *alloca ();
  37 #      endif
  38 #     else
  39 extern char *alloca ();
  40 #     endif
  41 #    endif
  42 #   endif
  43 #  endif
  44 # endif
  45 #endif